Wrench.



J. W. SULLIVAN.

' WRENCH. I APPLICATION FILED AIR. 14,1909. 944,923, PatentedDec.28,1909. Z 695]. flaw mIll!lllllllllllllllllllll i z a. I Q hWITNESSES I [Mm/70R M 5 )fl Jam v l/l. SUM/WIN. A BY ATTORNEYS JOHNWALTER SULLIVAN, OF EDMONTON, ALBERTA, CANADA.

WRENCH.

Specification of Letters Patent.

Patented Dec. 28, 1909.

Application filed April 14, 1909. Serial No. 489,778.

To all whom it may concern;

Be it known that 1, JOHN l/VALTER SULLI- VAN, a subject of the King ofGreat Britain, and a resident of Edmonton, in the Province of Albertaand Dominion of Canada, have made certain new and useful Improvements inrenches, of which the following is a specification.

My invention relates to improvements in wrenches in which a sliding anda stationary jaw is used, and has for its object to produce a wrenchwhich shall consist of few parts is easily and quickly manipulated andwhich will have positive gripping action.

My invention therefore consists in making a wrench with a main bodyportion having a rigid jaw at one end, a sliding jaw having an extensionrack and a spring controlled cam pawl having a rubber face engaging theextension rack.

It further consists in certain novel features of constructionarrangement and combination of parts as Wlll be hereinafter fullydescribed and pointed out in the claims, reference being had to theaccompanying drawings in which Figure 1 is a perspective view ofmyimproved wrench, Fig. 2 is a vertical section of a portion of thewrench, Fig. 3 is a transverse horizontal section on line 3-3 of Fig. 2,and Fig. 4 is a perspective view of the locking cam pawl and spring forcontrolling same.

In carrying out my invention I use a handle A, which is a malleablecasting having in its upper portion an elongated rectangular recess orsocket A while projecting laterally from said handle at its upper endare the spaced ears A A between which is held the cam pawl B by means ofthe pin Z) passing through both ears and upon which said pawl may swing.Within the socket A is placed a rectangular shank 0 having at its outerend the integral jaw C; the shank C fits snugly within the socket A onthree of its sides, but between its fourth face and the inner wall ofthe socket A a space is left within which fits slidably the extension ofthe sliding jaw D; said extension is indicated by D; the sliding jaw Dhas a vertical rectangular opening through the same which fits slidablyon the shank O; the front face of the extension D is serrated as shownat D constituting D rack.

One face of the cam pawl B, namely the face adjacent to the extensionrack, is provided with serrations Z) similar to the serrations on therack D in size and pitch; the serrated face of the cam pawl B isnormally held in engagement with rack extension D by spring pressure,such pressure being secured by springs E which are formed of wire coiledaround the pin Z) just below the upper ear A and just above the lowerear A the coils lying in circular depressions b surrounding the pivothole through the pawl B the spring wire is then crossed in oppositedirections and has extensions 6 and c the extension 6 lying in adisagree groove 6 in the upper and lower jaws of the pawl, while theextension 6 projects beyond the cam B and has its end bent as at e tolie against the side face of the handle of the wrench.

The outer vertical face of the pawl is preferably rounded as shown, andsaid pawl on its straight sides does not extend beyond the ears A Asstated the pawl is normally held in engagement with the rack extensionD. Now to operate the wrench the pawl B is swung on its pivot by thefingers of one hand of the operator throwing the serrated face out ofengagement with the rack D on extension D while the jaw D is slid alongwith the other hand into engagement with the nut or other object to begripped which will be held between the stationary jaw C and said jaw D;the pawl is now released whereupon the springs E throw the serrated faceof the same into engagement with the rack D and securely hold the jaw inits adjusted position. Owing to the number of serrations 011 the pawland the pressure of the springs, the sliding aw will be prevented fromaccidentally slipping, and the condition may be rendered more certain byholding the cam against the rack extension D by means of the hand of theoperator grasping the wrench at this point. The stationary jaw of thewrench may be provided with an integral claw F for withdrawing tacks,nails, &c.

It will thus be seen that I provide a simple, cheap and efiicientwrench, that will be positive in its gripping action, and one which canbe quickly adjusted to varying sizes of objects.

I claim 1. A wrench consisting of a handle, a rigid jaw having a flatfaced shank fitting within said handle, spaced ears projecting from saidhandle, a spring actuated pawl pivotally mounted between said ears, saidpawl having one of its longitudinal faces ribbed or serrated, a movablejaw slidably mounted on the flat faced shank of the rigid jaw, anextension projecting downwardly from said movable jaw, one face of saidextension being fiat and adapted to lie againstthe flat face of therigid jaw shank, and the opposite face of the extension having ribs orserrations corresponding to the ribs or serrations of the pivoted pawland lying adj acent to the serrated face of the pawl.

2. A wrench consisting of a handle member having a socket in its upperend, a rigid jaw member having a shank fitting within said socket, amovable jaw member slidably mounted on said shank, a serrated extensionextending downwardly into said socket and alongside the shank of therigid jaw, spaced ears projecting from the handle member, a pawlpivotally mounted between said ears and having a serrated vertical faceadapted to engage the serrated extension of the movable jaw, and coiledspringsseated within the pawl and engaging said pawl and the handlerespectively.

JOHN XVALTER SULLIVAN. lVitnesses LILA E. VANIDOUR, J OHN Common.

